document.write( "Question 690097: Find the discriminant of the function f(x) = 2x^2 - 6x - 3 and determine how many roots the function has. \n" ); document.write( "

Algebra.Com's Answer #426159 by josmiceli(19441) $\"\"$ $\"About$

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The discriminant is $\"+b%5E2+-+4%2Aa%2Ac+\"$
\n" ); document.write( "when equation has the form
\n" ); document.write( " $\"+f%29x%29+=+a%2Ax%5E2+%2B+b%2Ax+%2B+c+\"$
\n" ); document.write( "----------------------
\n" ); document.write( " $\"+f%28x%29+=+2x%5E2+-+6x+-+3+\"$
\n" ); document.write( " $\"+a+=+2+\"$
\n" ); document.write( " $\"+b+=+-6+\"$
\n" ); document.write( " $\"+c+=+-3+\"$
\n" ); document.write( " $\"+b%5E2+-+4%2Aa%2Ac+=+%28-6%29%5E2+-+4%2A2%2A%28-3%29+\"$
\n" ); document.write( " $\"+b%5E2+-+4%2Aa%2Ac+=+36+%2B+24+\"$
\n" ); document.write( " $\"+b%5E2+-+4%2Aa%2Ac+=+60+\"$
\n" ); document.write( "When the discriminant is positive, that
\n" ); document.write( "means there are 2 real roots\r
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